EP3556891A4 - Non-oriented electrical steel sheet and manufacturing method therefor - Google Patents
Non-oriented electrical steel sheet and manufacturing method therefor Download PDFInfo
- Publication number
- EP3556891A4 EP3556891A4 EP17883674.8A EP17883674A EP3556891A4 EP 3556891 A4 EP3556891 A4 EP 3556891A4 EP 17883674 A EP17883674 A EP 17883674A EP 3556891 A4 EP3556891 A4 EP 3556891A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- manufacturing
- steel sheet
- electrical steel
- method therefor
- oriented electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1222—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1272—Final recrystallisation annealing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/05—Grain orientation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
- C22C2202/02—Magnetic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Soft Magnetic Materials (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020160173922A KR101892231B1 (en) | 2016-12-19 | 2016-12-19 | Non-oriented electrical steel sheet and method for manufacturing the same |
PCT/KR2017/015026 WO2018117601A1 (en) | 2016-12-19 | 2017-12-19 | Non-oriented electrical steel sheet and manufacturing method therefor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3556891A1 EP3556891A1 (en) | 2019-10-23 |
EP3556891A4 true EP3556891A4 (en) | 2019-12-04 |
Family
ID=62626634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17883674.8A Pending EP3556891A4 (en) | 2016-12-19 | 2017-12-19 | Non-oriented electrical steel sheet and manufacturing method therefor |
Country Status (6)
Country | Link |
---|---|
US (1) | US11254997B2 (en) |
EP (1) | EP3556891A4 (en) |
JP (1) | JP6931075B2 (en) |
KR (1) | KR101892231B1 (en) |
CN (1) | CN110088340B (en) |
WO (1) | WO2018117601A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102120276B1 (en) * | 2018-09-27 | 2020-06-08 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
KR102325011B1 (en) * | 2019-12-20 | 2021-11-11 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
NL2027728B1 (en) * | 2021-03-09 | 2022-09-26 | Bilstein Gmbh & Co Kg | Method for manufacturing a soft magnetic metal precursor |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH055126A (en) * | 1991-03-15 | 1993-01-14 | Sumitomo Metal Ind Ltd | Production of nonoriented silicon steel sheet |
US6428632B1 (en) * | 1999-11-26 | 2002-08-06 | Kawasaki Steel Corporation | Non-oriented electromagnetic steel sheet having reduced magnetic anisotropy in high frequency region and excellent press workability |
JP2011006731A (en) * | 2009-06-24 | 2011-01-13 | Jfe Steel Corp | Core material for divided motor |
JP2011132558A (en) * | 2009-12-22 | 2011-07-07 | Jfe Steel Corp | Method for manufacturing non-oriented electromagnetic steel sheet |
JP2011184787A (en) * | 2010-03-11 | 2011-09-22 | Nippon Steel Corp | High tensile strength non-oriented electromagnetic steel sheet having excellent high frequency iron loss |
JP2012112015A (en) * | 2010-11-26 | 2012-06-14 | Jfe Steel Corp | Nondirectional electromagnetic steel sheet, and method for manufacturing the same |
US20140345751A1 (en) * | 2011-09-27 | 2014-11-27 | Jfe Steel Corporation | Non-oriented electrical steel sheet |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3350214B2 (en) * | 1994-05-06 | 2002-11-25 | 新日本製鐵株式会社 | Manufacturing method of non-oriented electrical steel sheet with excellent surface properties and magnetic properties |
JPH0841542A (en) * | 1994-07-28 | 1996-02-13 | Nippon Steel Corp | Production of nonoriented silicon steel sheet excellent in magnetic property |
KR100479992B1 (en) * | 1999-09-22 | 2005-03-30 | 주식회사 포스코 | A non-oriented steel sheet with excellent magnetic property and a method for producing it |
US20050000596A1 (en) * | 2003-05-14 | 2005-01-06 | Ak Properties Inc. | Method for production of non-oriented electrical steel strip |
KR100973627B1 (en) | 2005-07-07 | 2010-08-02 | 수미도모 메탈 인더스트리즈, 리미티드 | Non-oriented electromagnetic steel sheet and process for producing the same |
JP5028992B2 (en) | 2005-12-15 | 2012-09-19 | Jfeスチール株式会社 | Non-oriented electrical steel sheet and manufacturing method thereof |
JP5119710B2 (en) | 2007-03-28 | 2013-01-16 | Jfeスチール株式会社 | High strength non-oriented electrical steel sheet and manufacturing method thereof |
JP2010121150A (en) * | 2008-11-17 | 2010-06-03 | Sumitomo Metal Ind Ltd | Non-oriented electrical steel sheet for rotating machine, the rotating machine, and method of manufacturing the same |
KR101110257B1 (en) * | 2009-08-07 | 2012-02-16 | 주식회사 포스코 | Non-oriented electrical steel sheet with high magnetic flux density and manufacturing method thereof |
EP2540853B1 (en) | 2010-02-25 | 2015-05-27 | Nippon Steel & Sumitomo Metal Corporation | Non-oriented electrical steel sheet |
KR101296130B1 (en) | 2010-12-27 | 2013-08-19 | 주식회사 포스코 | Non-oriented electrical steel sheet with excellent magnetic properties, and Method for manufacturing the same |
KR20150016434A (en) * | 2013-08-01 | 2015-02-12 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
JP5995002B2 (en) * | 2013-08-20 | 2016-09-21 | Jfeスチール株式会社 | High magnetic flux density non-oriented electrical steel sheet and motor |
KR20150062245A (en) * | 2013-11-28 | 2015-06-08 | 주식회사 포스코 | Non-oriented electrical steel sheets and method for manufacturing the same |
JP6432173B2 (en) | 2014-06-17 | 2018-12-05 | 新日鐵住金株式会社 | Non-oriented electrical steel sheet with good all-round magnetic properties |
JP5975076B2 (en) * | 2014-08-27 | 2016-08-23 | Jfeスチール株式会社 | Non-oriented electrical steel sheet and manufacturing method thereof |
KR101648334B1 (en) * | 2014-12-16 | 2016-08-16 | 주식회사 포스코 | Non-oriented electrical steel sheet and method for manufacturing the same |
CN105296849B (en) * | 2015-10-10 | 2017-07-07 | 武汉钢铁(集团)公司 | A kind of large-scale generator rotor non-oriented electrical steel and production method |
CN105908072B (en) * | 2016-05-24 | 2017-12-19 | 嵊州北航投星空众创科技有限公司 | A kind of preparation method of high intensity non-orientation silicon steel |
-
2016
- 2016-12-19 KR KR1020160173922A patent/KR101892231B1/en active IP Right Grant
-
2017
- 2017-12-19 WO PCT/KR2017/015026 patent/WO2018117601A1/en active Application Filing
- 2017-12-19 US US16/470,786 patent/US11254997B2/en active Active
- 2017-12-19 EP EP17883674.8A patent/EP3556891A4/en active Pending
- 2017-12-19 JP JP2019554464A patent/JP6931075B2/en active Active
- 2017-12-19 CN CN201780078694.2A patent/CN110088340B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH055126A (en) * | 1991-03-15 | 1993-01-14 | Sumitomo Metal Ind Ltd | Production of nonoriented silicon steel sheet |
US6428632B1 (en) * | 1999-11-26 | 2002-08-06 | Kawasaki Steel Corporation | Non-oriented electromagnetic steel sheet having reduced magnetic anisotropy in high frequency region and excellent press workability |
JP2011006731A (en) * | 2009-06-24 | 2011-01-13 | Jfe Steel Corp | Core material for divided motor |
JP2011132558A (en) * | 2009-12-22 | 2011-07-07 | Jfe Steel Corp | Method for manufacturing non-oriented electromagnetic steel sheet |
JP2011184787A (en) * | 2010-03-11 | 2011-09-22 | Nippon Steel Corp | High tensile strength non-oriented electromagnetic steel sheet having excellent high frequency iron loss |
JP2012112015A (en) * | 2010-11-26 | 2012-06-14 | Jfe Steel Corp | Nondirectional electromagnetic steel sheet, and method for manufacturing the same |
US20140345751A1 (en) * | 2011-09-27 | 2014-11-27 | Jfe Steel Corporation | Non-oriented electrical steel sheet |
Non-Patent Citations (1)
Title |
---|
See also references of WO2018117601A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN110088340B (en) | 2021-08-31 |
CN110088340A (en) | 2019-08-02 |
JP2020509245A (en) | 2020-03-26 |
US11254997B2 (en) | 2022-02-22 |
KR101892231B1 (en) | 2018-08-27 |
EP3556891A1 (en) | 2019-10-23 |
WO2018117601A1 (en) | 2018-06-28 |
US20200087749A1 (en) | 2020-03-19 |
JP6931075B2 (en) | 2021-09-01 |
KR20180071103A (en) | 2018-06-27 |
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